Drying-canal.



L. JUNGELS.`

DBYING CANAL.

APPLIGATION FILED JUNI: 14, 1912.

Patented Jan. 20, 1914,

LUDWIG JUNG-ELS, 0F LENNEI, GERMANY.

DRYING-CANAL Specification of Letters Patent..

Patented Jan. 20, 19114.

Application led .Tune 14, 1912. Serial No. 703,622.

To all whom t may concern:

Be it known that I, LUDWIG JUNesLs, a subject of the German Emperor, residing at Lennep, Germany, have invented an Improvement in Drying-Canals, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to the drying of gutter tiles and it has for its object to pro vide a novel device and method :for this purpose by which gutter tiles can be dried without any appreciable loss due to breakage.

The present method of drying gutter tiles is to. use pure air as a drying medium which is carried over the green tiles at a high temperature. This results in drying the outside parts of the tiles more rapidly than the interior and as a consequence the tiles are very aptto break when they have been brought to a uniform temperature. With my' invention this breakage is avoided and I obtain this end by using an apparatus having two separate canals or passages through which the tiles are passed in succession, the tiles being partially dried in the first passage or canal and being completely dried in the second passage or canal in such a way as to avoid the danger of breakage.

The drawings show one embodiment of my invention.

The device illustrated in the drawing comprises two drying canals or passages K1 and K2 which are connected by a by-pass G.

The canal K1 has an entrance opening which is closed by the double doors T1, T2, and the canal or passage K2 has an exit opening also closed by double doors T1, T2. The object of usingthe double doors T1, T2 is so that acarriage containing the tile can be entered into the canal K1 and discharged from the canal K2 without allowing the heating medium to escape. In delivering the carriage containing tiles into the canal K1, the door T1 is rst opened to admit the carriage into the space between the doors and then the door is closed and the door T2 opened thus allowing the carriage to pass into the canal K1. The canals are shut off from the by-pass G byother doors..

The canal K1 is heated by air which is drawn over a heater A and through the canal K1 by means of a fan V1, the heater and the fan jbeing arran ed so that the heated air traverses the full ength of the canal.

The canal K2 is heated by `superdieated steam which is generated in the heater H2 having a furnace F connected therewith. The super-heated steam thus generated in the furnace H2 is delivered to one end of the canal K2 and then passes over from the other end of said canal through a pipe B to the heater A and from the heater through a pipe C to a fan V2 which returns it to t-he heater H2. The fan V2 has no communication with the atmosphere and as a result the heating medium which is `used in the canal K2 is pure over-heated or super-heated steam. This steam after passing through the canal K2 is made use of in the heater A for heat-ing the air which is delivered to the canal K1.

In the operation of the device the green tiles are first introduced into the canal K1 where they are slightly dried by the heated air passing therethrough. They are then carried into the finishing drying canal K2 through the by-pass Gr.l This canal K2 will be filled with over-heated steam which is at a higher temperature than the artially heated tiles which are delivered fIiom the canal K1. When these partially heated tiles are first introduced into the canal K2, the steam in said canal K2 will condense on the tiles thus providing a surface moisture which prevents the outside crust 4of the tile from drying too suddenly and too quickly thus the entire material of the tile is brought/ to the proper temperature uniformly and without danger of the tile cracking because of the fact that the outside of the tile has dried first before the inside.

It will be noted that in this invention the heat that is delivered to the first canal K1 is derived from the steam that is used in heating the second canal K2. The operation of the device will preferably be so adjusted that the quantity of water which is condensed in the heater A will be just equal to the Water which is evaporated for furnishing steam to the canal K2 and by this arrangement the coal consumption of the installation is reduced to a minimum. f

My device is extremely economical in operation as the heat units which are delivered from the steam in the heater A are utilized in heating of the air delivered to the canal K1 and therefore no heat is lost.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a device of the class described, the

combination with two separate drying canals through which the material to be dried is passed in succession, of means for circulating heated air through the-canal into which the material is first introduced and means A t'or circulating overheated steam through the other canal whereby the said material is partially dried by the heated air and the drying is completed under the influence of the over-heated steam.

2. In a device of the class described, the combination with two separate drying canals through which the materialto be dried is passed in succession, 'of means for circulating heated air through the canal into which the material is first introduced and means for circulating over-heated steam through the other canal whereby the vsaid'material is Loeaeoa partially dried by the heated air and the y drying is completed under the influence of the over-heated steam and means to heat the air by circulating steam.

3. rihe process of drying gutter tile and action of over-heated steam, whereby the tiley is completely dried.

In testimony whereof, I have signed my name to this specication, in the presence of two subscribing witnesses. A LUDWG JUNGELS. [Lgs] Witnesses:

.HELEN'NUFER, AJLBEIRTA Num. 

